restore your ipod touch on itunes
yes it deletes everything on your ipod do not do it
delete everything and restore settings to factory settings
When restoring your Ipod Touch the data on itunes doesn NOT get deleted. :D
iPod Touch software updates should not and do not delete everything.
Just go to your iTunes account and click on restore
Yes you can, and before you sell an ipod it is a good idea to delete everything on before you sell it. I would recomend selling an ipod to a friend if a friend wants an ipod that way you know who your ipod is going to and you know they are not a scammer. Sorry If i went off topic
Delete it from iTunes and then re-sync.
No, updating an iPod will not delete anything on your iPod.
You can delete the iPod library song by song or the entire folders in iTunes or your music folder. This won't delete the songs from your iPod unless you sync your iPod with that iTunes again. Otherwise you can't keep syncing your iPod to deleted files.
You can open the settings app and go to General->Usage There you can delete data from apps. This will delete all the videos and if your looking to delete a few videos and it won't then I don't know what to do for you except restore which will delete everything off your iPod.
You will have to connect your ipod to itunes and click restore factory settings. It will delete everything, but if you press back up when its deleting everything it will put all of you data back on the ipod